10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hello;
I am not good at file and stream editing. I need to replace a few digits in two files. The lines in files looks like this:
Line in the first file, /dw300/data/obe/2019273.L800JR.1909.273
Line in second file, 1|2019273.L800JR.1909.273
I will write a function to connect to... (7 Replies)
Discussion started by: duke0001
7 Replies
2. Debian
Good Day Every one
I have a problem finding and replacing text in some large files that will take a long time to manually edit.
Example text file looks like this
#Example Large Text File
unix
linux
dos
squid
bind
dance
bike
car
plane
What im trying to do is to edit all the... (4 Replies)
Discussion started by: linuxjunkie
4 Replies
3. Shell Programming and Scripting
Hi,
In a file we have the following data like as below
abcdef="cfg-1-15"
bmmdda-g-45-2
yhdiao"rtg-1-df-34"
I need a sed/awk command to replace the above string with empty.
Thx, (1 Reply)
Discussion started by: kirankumar
1 Replies
4. Shell Programming and Scripting
Hi All,
I already have a code which replaces column 14 of NPBR.XTR.tmp with column 8 of NPBR3G.XTR.final
awk -F'\|' 'FNR==NR{a= $2"^"$8;next;}a{split(a,b,"^");$8=b;$14=b;}1' OFS="|" ${SHTEMP}NPBR3G.XTR.final ${SHTEMP}NPBR.XTR.tmp > ${SHTEMP}NPBR.XTR.final
I also need to replace column 15... (2 Replies)
Discussion started by: nua7
2 Replies
5. Shell Programming and Scripting
Hi
I know sed and awk has options to give range of line numbers, but
I need to replace pattern in specific lines
Something like
sed -e '1s,14s,26s/pattern/new pattern/' file name
Can somebody help me in this....
I am fine with see/awk/perl
Thank you in advance (9 Replies)
Discussion started by: dani777
9 Replies
6. Shell Programming and Scripting
Can someone help me with a sed command:
There will be multiple occurences in a file that look like this:
MyFunction(12c34r5)
and I need to replace that with just the 12c34r5 for every occurrence. The text between the parentheses will be different on each occurrence, so I can't search for that.... (4 Replies)
Discussion started by: missb
4 Replies
7. Shell Programming and Scripting
My apologies if this has been answered in a previous post. I've been doing a lot of searching, but I haven't been able to find what I was looking for. Specifically, I am wondering if I can utilize sed and/or awk to locate two strings in a file, and replace everything between those two strings... (12 Replies)
Discussion started by: kiddsupreme
12 Replies
8. Shell Programming and Scripting
Hi All,
I need to extract 543 from the command below :
# pvscan
PV /dev/sdb1 VG vg0 lvm2
Total: 1 543.88 GB] / in use: 1 / in no VG: 0
I have the following command which does the job, but I think this could be achieved in a more simple way using sed or awk. Any help is... (7 Replies)
Discussion started by: nua7
7 Replies
9. Shell Programming and Scripting
Howdy!
I'm trying to automate editing of a configuration file (custom.conf for GDM). I need to find every line between a line that starts with "" and the next line that starts with "", I want to preserve that line, but then delete all the lines in that configuration section and then insert... (3 Replies)
Discussion started by: TXTad
3 Replies
10. Shell Programming and Scripting
I have many text file reports generated by a Information Assurance tool that I need to get into a .CSV format or Excel tab delimited format. I want to use sed or awk to grab all the information in the sample text file below and create column headings:Risk ID, Risk Level, Category, Description, How... (5 Replies)
Discussion started by: Bjoeboo
5 Replies
SED(1) General Commands Manual SED(1)
NAME
sed - stream editor
SYNOPSIS
sed [ -n ] [ -e script ] [ -f sfile ] [ file ] ...
DESCRIPTION
Sed copies the named files (standard input default) to the standard output, edited according to a script of commands. The -f option causes
the script to be taken from file sfile; these options accumulate. If there is just one -e option and no -f's, the flag -e may be omitted.
The -n option suppresses the default output.
A script consists of editing commands, one per line, of the following form:
[address [, address] ] function [arguments]
In normal operation sed cyclically copies a line of input into a pattern space (unless there is something left after a `D' command),
applies in sequence all commands whose addresses select that pattern space, and at the end of the script copies the pattern space to the
standard output (except under -n) and deletes the pattern space.
An address is either a decimal number that counts input lines cumulatively across files, a `$' that addresses the last line of input, or a
context address, `/regular expression/', in the style of ed(1) modified thus:
The escape sequence `
' matches a newline embedded in the pattern space.
A command line with no addresses selects every pattern space.
A command line with one address selects each pattern space that matches the address.
A command line with two addresses selects the inclusive range from the first pattern space that matches the first address through the next
pattern space that matches the second. (If the second address is a number less than or equal to the line number first selected, only one
line is selected.) Thereafter the process is repeated, looking again for the first address.
Editing commands can be applied only to non-selected pattern spaces by use of the negation function `!' (below).
In the following list of functions the maximum number of permissible addresses for each function is indicated in parentheses.
An argument denoted text consists of one or more lines, all but the last of which end with `' to hide the newline. Backslashes in text
are treated like backslashes in the replacement string of an `s' command, and may be used to protect initial blanks and tabs against the
stripping that is done on every script line.
An argument denoted rfile or wfile must terminate the command line and must be preceded by exactly one blank. Each wfile is created before
processing begins. There can be at most 10 distinct wfile arguments.
(1)a
text
Append. Place text on the output before reading the next input line.
(2)b label
Branch to the `:' command bearing the label. If label is empty, branch to the end of the script.
(2)c
text
Change. Delete the pattern space. With 0 or 1 address or at the end of a 2-address range, place text on the output. Start the
next cycle.
(2)d Delete the pattern space. Start the next cycle.
(2)D Delete the initial segment of the pattern space through the first newline. Start the next cycle.
(2)g Replace the contents of the pattern space by the contents of the hold space.
(2)G Append the contents of the hold space to the pattern space.
(2)h Replace the contents of the hold space by the contents of the pattern space.
(2)H Append the contents of the pattern space to the hold space.
(1)i
text
Insert. Place text on the standard output.
(2)n Copy the pattern space to the standard output. Replace the pattern space with the next line of input.
(2)N Append the next line of input to the pattern space with an embedded newline. (The current line number changes.)
(2)p Print. Copy the pattern space to the standard output.
(2)P Copy the initial segment of the pattern space through the first newline to the standard output.
(1)q Quit. Branch to the end of the script. Do not start a new cycle.
(2)r rfile
Read the contents of rfile. Place them on the output before reading the next input line.
(2)s/regular expression/replacement/flags
Substitute the replacement string for instances of the regular expression in the pattern space. Any character may be used instead
of `/'. For a fuller description see ed(1). Flags is zero or more of
g Global. Substitute for all nonoverlapping instances of the regular expression rather than just the first one.
p Print the pattern space if a replacement was made.
w wfile
Write. Append the pattern space to wfile if a replacement was made.
(2)t label
Test. Branch to the `:' command bearing the label if any substitutions have been made since the most recent reading of an input
line or execution of a `t'. If label is empty, branch to the end of the script.
(2)w wfile
Write. Append the pattern space to wfile.
(2)x Exchange the contents of the pattern and hold spaces.
(2)y/string1/string2/
Transform. Replace all occurrences of characters in string1 with the corresponding character in string2. The lengths of string1
and string2 must be equal.
(2)! function
Don't. Apply the function (or group, if function is `{') only to lines not selected by the address(es).
(0): label
This command does nothing; it bears a label for `b' and `t' commands to branch to.
(1)= Place the current line number on the standard output as a line.
(2){ Execute the following commands through a matching `}' only when the pattern space is selected.
(0) An empty command is ignored.
SEE ALSO
ed(1), grep(1), awk(1), lex(1)
7th Edition April 29, 1985 SED(1)